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The question is why the EXTF LED at the CPU is lit on all the time. External Fault present within CPU module information. No other faults present.Within Hardware Configuration all network elements are healthy. Also within online topology the only red marked element is the CPU. Please also see attached the upload of the diagnostic buffer.Details of the CPU: CPU 416F-3 PN/DP, 416-3FS07-0AB0, V7.0.0.